the ratio of boys to girls in a class is 4 : 5 how many girls are there in a class if 12 boys are in the class

Do more republicans (group a) than democrats (group b) favor a bill to make it easier for someone to own a firearm? two hundred republicans and two hundred democrats were asked if they favored a bill that made it easier for someone to own a firearm. how would we write the alternative hypothesis?

An 18% discount on a watch saved a shopper $72. find the price of the watch before the discount

When a valve is open 281 gallons of water go through it in one hour the number of gallons that would go through in 94 hours is